[Qemu-devel] [RFC V5 54/62] block: Add bdrv_is_dedup_running.

[Benoît Canet]

---
 block.c               |   19 +++++++++++++++++++
 include/block/block.h |    1 +
 2 files changed, 20 insertions(+)

diff --git a/block.c b/block.c
index aee33e0..e83666a 100644
--- a/block.c
+++ b/block.c
@@ -4342,6 +4342,25 @@ bool bdrv_has_dedup(BlockDriverState *bs)
     return bdi.has_dedup;
 }
 
+/* Return true if the device has deduplication and it's running */
+bool bdrv_is_dedup_running(BlockDriverState *bs)
+{
+    BlockDriverInfo bdi;
+    int ret = 0;
+
+    ret = bdrv_get_info((BlockDriverState *) bs, &bdi);
+
+    if (ret < 0) {
+        return false;
+    }
+
+    if (!bdi.has_dedup) {
+        return false;
+    }
+
+    return bdi.dedup_running;
+}
+
 /* needed for generic scsi interface */
 
 int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
diff --git a/include/block/block.h b/include/block/block.h
index e6f86ac..f4e1d2a 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -307,6 +307,7 @@ int bdrv_is_inserted(BlockDriverState *bs);
 int bdrv_media_changed(BlockDriverState *bs);
 void bdrv_lock_medium(BlockDriverState *bs, bool locked);
 bool bdrv_has_dedup(BlockDriverState *bs);
+bool bdrv_is_dedup_running(BlockDriverState *bs);
 void bdrv_eject(BlockDriverState *bs, bool eject_flag);
 const char *bdrv_get_format_name(BlockDriverState *bs);
 BlockDriverState *bdrv_find(const char *name);
-- 
1.7.10.4